Mount Crillon is a high peak of the Fairweather Range, the southernmost part of the Saint Elias Mountains.

It is near the southern end of the Fairweather Range, with only one 10,000 foot (3,050m) peak, Mount La Perouse, lying south of it.

It is 10 miles (16 km) due east of the head of Lituya Bay, a small inlet of the Gulf of Alaska, which is itself part of the Pacific Ocean.

The North and South Crillon Glaciers flow west from the peak toward Lituya Bay.

The first ascent was in 1934, by explorer Bradford Washburn on his third attempt,[2] and longtime editor of the American Alpine Journal H. Adams Carter.